They don't.
Nothing does. ;)
But, how do they stay up? They are using the air to hold them up. Still air isn't good for much useful work. But, moving air can be a very powerful thing. Air can move kites, windmills, sailboats, paintballs, trees, houses and cars. It will even blow away your umbrella. Birds are able to harness this power and use it to keep them above the ground. They beat their wings to force the air to move and they can glide at higher elevations by using the existing currents. They have very lightweight bodies and long wingspans compared to their size. When they are flying they hold their bodies horizontally and tuck up their feet to allow the air to flow as smoothly around them as possible. This allows for faster moving, more supportive air.
Try folding paper airplanes in a variety OS shapes to get an idea of what shapes glide well and what shapes don't. This will help you visualise the way a bird's body shape helps the bird to fly.
in my estimation birds dont defy gravity,they resist with their wings.if humans were born with wings,then thats another story my friend
are you kidding me? no.Confirmation:No, humans cannot have retractable claws. Humans have fingernails without the underlying muscular structure necessary to cause claws to retract beneath the skin.Fictional humanoid characters such as Wolverine in the Marvel Comics series X-men are just that: fictional. Even in one version of the comic book stories, Wolverine did not naturally have retractable claws / blades, but endured a surgical procedure.
No I don't think so 1. Humans can't fly without technology 2. Super Sonic is so fast
the goddess Ashara is the oldest goddess to exist on Earth. She is the creator of the Vampires and all creatures in the world other than humans and animals. She is, without doubt, a nightmare
Not really.So far, everything humans has found is affected by gravity, and reacts to it infairly well understood ways.Gravity is basically about how objects with mass pulls on each other. It's a forcethat's dependent on the product of the masses involved, and the distancebetween them.Humans pull on Earth the same way as Earth pulls on humans.If you're in space, you're a far, far away from anything heavy. The situationhas nothing to do with defying gravity, but due to the distances involved, wedon't notice it that much. But it's still there, doing its thing, entirely accordingto the textbook.Then there is the Zero-G flight, but that's not about defying gravity either.Rather about understanding it, using it and countering it to create free-fallconditions. And while seemingly very similar, free-fall and zero gravity aren'tthe same thing.By having a plane follow the same trajectory and speed as - say a thrown stone -everything within the plane becomes weightless WRT the plane, for the descentpart of the trajectory, for about 20 seconds.Apart from the plane being able to land, it's like being inside a falling elevator.If you and the elevator are both falling at the same rate, there's no longer anyforce pushing you against the floor.Zero gravity is hard, and not really found anywhere inside out solar system.Zero gravity means there's no force acting on you at all. Free fall is a lot easier,and simply means that you and your immediate surroundings are free to reactthe same way to the pull of gravity.
You cannot buy Benedict Cumberbatch, because he is a human and humans are not property that can be bought and sold. You can buy films and television shows starring Benedict Cumberbatch at any store that sells DVDs.
Airplane cabins are pressurized because humans cannot breath at a very high elevation.Aircraft are pressurized to allow them to fly higher. Without pressurization, the amount of oxygen in the air would not be sufficient for humans to breathe.
No.
It keeps us on the ground without it we would be floating.
without gravity there can be no free fall. The only time humans have eperienced free fall is within a space craft where gravity is regulated.
We cannot survive without water for three day
Unless stationed within a flying automobile (helicopter, airplane, flying car, etc.), humans cannot fly.
It would be cool without gravity. Without gravity we would be able to fly and jump very high.
newtons laws of motion are important to humans because without them we wouldn't know what motion or gravity is.
cellulose which is present in grass can be digested by ruminants but cannot be digested by humans
because computers cannot work without the help of humans..
No, humans cannot live without establishing a harmonious connection with the ecosystems in the oceans.
Without a period, this sentence is incomplete or Humans cannot live without food or water.